Prohibition all but ended? Correct! (4,2)
I believe the answer is:
bang on
'correct' is the definition.
Both the answer and definition are adjectives.
Perhaps they are linked in a way I don't understand?
'prohibition all but ended?' is the wordplay.
'prohibition' becomes 'ban' (ban is a kind of prohibition).
'all but' means to remove the last letter ('all but' can mean 'almost' or 'nearly').
'ended?' becomes 'gone' (going is a kind of ending).
'gone' with its final letter taken away is 'gon'.
'ban'+'gon'='BANG ON'
Can you help me to learn more?
(Other definitions for bang on that I've seen before include "Keep talking tediously" , "Exactly right - sounds noisy" , "Informally, absolutely correct - may be noisy" , "Talk at length" , "Absolutely right, informally explosive" .)